Ric

I am running Vista Business.

I left my computer running for ten minutes - came back to it and found that
all the USB devices had stopped working - not even the mouse worked!

After a lot of reboots and system restores, I have managed to get some
devices working (keyboard, mouse, USB key, webcam) but there are still
several that do not.

I have tried reinstalling the drivers for some of the items that do not
work - but this does not appear to be a driver problem. I have also tried
swapping devices to determine if there is a USB hardware failure - but there
is not.

Any other suggestions?